I just read someone's response to this post saying that you are afraid to use test pipes. Do you recall how my car sounded? I'm using Greg D down pipes and testpipes with B&B and it's really not all that loud at all. At first it was for me, but I'm already used to it and never really notice it as an attention getter (to cops...) when I'm pulling through downtown areas.
If it's not broken, lets take it apart and find out why not.